Unesco. Principal Regional Office for Asia and the Pacific. (1989). Resources for chemistry learning and teaching. Unesco.
Cita Chicago (17th ed.)Unesco. Principal Regional Office for Asia and the Pacific. Resources for Chemistry Learning and Teaching. Bangkok: Unesco, 1989.
Cita MLA (9th ed.)Unesco. Principal Regional Office for Asia and the Pacific. Resources for Chemistry Learning and Teaching. Unesco, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.